S2T40,第五章

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HealthCheck
{
    public class HealthCheckSet
    {
        public List<HealthCheckItems> Items { get; set; }
        public string Name { get; set; }
        public int Price { get; set; }

        public HealthCheckSet()
        {
            this.Items = new List<HealthCheckItems>();
        }
        /// <summary>
        /// 计算总金额
        /// </summary>
        public void CalcPrice()
        {
            int totalPrice = 0;
            foreach (HealthCheckItems item in this.Items)
            {
                totalPrice += item.Price;
            }
            this.Price = totalPrice;
        }
        
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HealthCheck
{
    public class HealthCheckItems
    {
        public string Description { get; set; }
        public string Name { get; set; }
        public int Price { get; set; }

        /// <summary>
        /// 方法重载
        /// </summary>
        /// <param name="description"></param>
        /// <param name="name"></param>
        /// <param name="price"></param>
        public HealthCheckItems(string description,string name,int price)
        {
            this.Description = description;
            this.Name = name;
            this.Price = price;
        }
        public HealthCheckItems()
        {
        }

    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace HealthCheck
{
    public partial class FrmMain : Form
    {
        public FrmMain()
        {
            InitializeComponent();
        }
        List<HealthCheckItems> Items;//声明Items集合用于保存套餐中的体检项
        List<HealthCheckItems> AllItems = new List<HealthCheckItems>();//声明AllItems集合，用于保存所有体检项
        HealthCheckSet Hcs;//声明HealthCheckSet对象
        //创建SetMeal字典
        public Dictionary<string, HealthCheckSet> SetMeal = new Dictionary<string, HealthCheckSet>();

        /// <summary>
        /// 初始化各体检项，套餐并将全部检查项绑定到cmbItem中
        /// </summary>
        public void InitItems()
        {
            HealthCheckItems hc1 = new HealthCheckItems("用于检查身高","身高",5);
            HealthCheckItems hc2 = new HealthCheckItems( "用于检查体重","体重", 5);
            HealthCheckItems hc3 = new HealthCheckItems( "用于检查视力","视力", 10);
            HealthCheckItems hc4 = new HealthCheckItems( "用于检查听力","听力", 10);
            HealthCheckItems hc5 = new HealthCheckItems( "用于检查肝功能","肝功能", 50);
            HealthCheckItems hc6 = new HealthCheckItems( "用于检查B超","B超", 30);
            AllItems.Add(hc1);
            AllItems.Add(hc2);
            AllItems.Add(hc3);
            AllItems.Add(hc4);
            AllItems.Add(hc5);
            AllItems.Add(hc6);

            for (int i = 0; i < AllItems.Count; i++)
            {
              cmbItem.Items.Add(AllItems[i].Name);
            }

            Items = new List<HealthCheckItems>();
            Items.Add(hc1);
            Items.Add(hc2);
            Items.Add(hc4);
            Items.Add(hc5);
            Hcs = new HealthCheckSet();
            Hcs.Items = Items;
            Hcs.Name = "入学体检";
            Hcs.CalcPrice();
            SetMeal.Add(Hcs.Name,Hcs);
            BindList();
        }
        /// <summary>
        /// 窗体加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FrmMain_Load(object sender, EventArgs e)
        {
            InitItems();
        }
        /// <summary>
        /// 选中套餐之后加载所对应的各项，并更新视图
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cmbSetMealList_SelectedIndexChanged(object sender, EventArgs e)
        {
            string Name = this.cmbSetMealList.Text;
            if (Name.Equals("请选择"))
            {
                dgvHealthCheckItem.DataSource = new BindingList<HealthCheckItems>();
                lblTcName.Text = "";
                lblPrice.Text = "";
                btnAdd.Enabled = false;
                btnDelete.Enabled = false;
            }
            else          
            {
                UpdateView(SetMeal[Name]);
                btnDelete.Enabled = true;

            }
        }
        /// <summary>
        /// 更新视图
        /// </summary>
        /// <param name="Hes"></param>
        public void UpdateView(HealthCheckSet Hes)
        {
            dgvHealthCheckItem.DataSource = new BindingList<HealthCheckItems>(Hes.Items);
            cmbItem.SelectedIndex = 0;
            lblTcName.Text = Hes.Name;
            lblPrice.Text = Hes.Price.ToString();
        }
        /// <summary>
        /// 绑定套餐类到cmbSetMealList中
        /// </summary>
        public void BindList()
        {
            this.cmbSetMealList.Items.Clear();
            this.cmbSetMealList.Items.Add("请选择");
            foreach (var Hc in SetMeal.Keys)
            {
                cmbSetMealList.Items.Add(Hc);
            }
            cmbSetMealList.SelectedIndex = 0;
        }
        /// <summary>
        /// 删除
        /// </summary>
        public void Delete()
        {
            //获取套餐名称
            string Name = this.cmbSetMealList.Text;
            //判断是否选中一行
            if (dgvHealthCheckItem.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选中要删除的项", "提示");
            }
            else
            {
                //获取选中项的索引
                int index = dgvHealthCheckItem.SelectedRows[0].Index;
                //删除选中项的集合
                SetMeal[Name].Items.RemoveAt(index);
                SetMeal[Name].CalcPrice();
                //更新DataGridView视图
                UpdateView(SetMeal[Name]);
                MessageBox.Show("删除成功。", "提示", MessageBoxButtons.OK,

MessageBoxIcon.Information);
            }
        }
        /// <summary>
        /// 单击删除
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnDelete_Click(object sender, EventArgs e)
        {
            Delete();
        }
        /// <summary>
        /// 选中体检项时，添加按钮可用
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cmbItem_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.btnAdd.Enabled = true;
        }
        /// <summary>
        /// 添加
        /// </summary>
        public void Insert()
        {
            //获取当前套餐名字
            string Name = cmbSetMealList.Text;
            if (cmbItem.SelectedIndex == -1)
            {
                MessageBox.Show("请选择一个项目！");
            }
            else
            {
                //获取选中项目的下标
                int index = cmbItem.SelectedIndex;
                //判断套餐中的项目集合是否有选择的项目
                if (!SetMeal[Name].Items.Contains(AllItems[index]))
                {
                    //添加选择项目到套餐中
                    SetMeal[Name].Items.Add(AllItems[index]);

                    //重新计算
                    SetMeal[Name].CalcPrice();
                    //更新视图
                    UpdateView(SetMeal[Name]);
                    lblPrice.Text = SetMeal[Name].Price.ToString();
                    MessageBox.Show("添加成功！", "提示",

MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show("该项目存在！", "提示",

MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }

        }
        /// <summary>
        /// 单击添加
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAdd_Click(object sender, EventArgs e)
        {
            Insert();
        }
        /// <summary>
        /// 新建套餐
        /// </summary>
        public void NewSetMeal()
        {
            if (string.IsNullOrEmpty(txtSetMealName.Text.Trim()))
            {
                MessageBox.Show("请输入套餐名称!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                 //获取新建套餐的名字
                string NewName = txtSetMealName.Text.Trim();
                 //新建套餐类
                 Hcs= new HealthCheckSet();
                 Hcs.Name = NewName;
                 //添加到套餐字典中
                 SetMeal.Add(Hcs.Name, Hcs);
                 //套餐选择框加载
                 BindList();
                 //默认选中新建套餐
                 cmbSetMealList.SelectedIndex = SetMeal.Count;
                 //更新视图
                 UpdateView(SetMeal[NewName]);
                 MessageBox.Show("添加成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
        /// <summary>
        /// 单击新建套餐
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnInsert_Click(object sender, EventArgs e)
        {
            NewSetMeal();
        }
    }
}